He is absolutely as sarcastic, belittling, and condescending as some of the worst right-wing extremists or creationists. Just because he doesn't have a shrill voice doesn't make him much less offensive - though I admit that a high pitched shrill girly voice would be even MORE distasteful to me.
You have your opinion on him based on your own beliefs and biases, and I have mine based on the same. But they're both just opinions, Smoke. And both are valid as far as opinions go.
It's not about girly voices; it's about style and demeanor, and it's absolutely false to say that Dawkins' style and demeanor are similar to those of Coulter and Limbaugh.
My opinion isn't based on my beliefs and biases, either. I agree with most of what Christopher Hitchens says about the subject, but I strongly dislike his style and demeanor, and I've often said so. (Actually, I usually refer to him as a belligerent sot or something along those lines.) I agree with most of what Keith Olbermann says, but cringe at his manner of saying it. If Dawkins' style and demeanor were similar to Coulter's or Limbaugh's, I'd be one of the first to say so and criticize him for it.
However, I have to agree with you that your own opinion about it is based on your beliefs and biases. It would pretty much have to be, since it could hardly be based on the way Dawkins comports himself.
It is not true that any opinion is as good as any other, and your opinion in this instance is obviously at variance with the facts.